I like the music...
but I think it has room for improvment.. the music i felt was fun and catchy though i think it woulda been great as others have mentioned before if it was a rythm based game. As far as controls go i really didn't feel the need to use the wasd keys to move around.. i pretty much just stood in one spot and rotated so that when the "enemies" hit me i'd have them hitthe right part but i just couldn't seem to spin fast enough! maybe if the rotating was based on the position of the mouse?
Only other thing i can think of is the fact that it got kinda repetitive. not that simplicity is bad at all of course. overall i will give this a 7.